[Code of Federal Regulations] [Title 40, Volume 5, Parts 53 to 59] [Revised as of July 1, 2000] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR57.801] [Page 154] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY PART 57--PRIMARY NONFERROUS SMELTER ORDERS--Table of Contents Subpart H--Waiver of Interim Requirement for Use of Continuous Emission Reduction Technology Sec. 57.801 Purpose and scope. (a) This subpart shall govern all proceedings for the waiver of the interim requirement that each NSO provide for the use of constant controls. (b) In the absence of specific provisions in this subpart, and where appropriate, questions arising at any stage of the proceeding shall be resolved at the discretion of the Presiding Officer or the Administrator, as appropriate.